package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.service.CategoryService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/category")
public class CategoryController {
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private RedisTemplate redisTemplate;
    @PostMapping
    public R<String> save(@RequestBody Category category){
        categoryService.save(category);
        redisTemplate.delete("category");
        return R.success("添加分类成功");
    }
    @GetMapping("/page")
    public R<Page<Category>> page(Integer page,Integer pageSize){
        //创建分页构造器
        Page<Category> categoryPage = new Page<>(page,pageSize);
        //查询条件
        LambdaQueryWrapper<Category> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.orderByAsc(Category::getSort);

        categoryService.page(categoryPage,queryWrapper);

        return R.success(categoryPage);
    }
    @PutMapping
    public R<String> updateById(@RequestBody Category category){
        categoryService.updateById(category);
        redisTemplate.delete("category");
        return R.success("更新成功");
    }
    @DeleteMapping
    public R<String> deleteById(Long id){
        categoryService.remove(id);
        redisTemplate.delete("category");
        return R.success("删除成功");
    }
    @GetMapping("/list")
    public R<List<Category>> list(Integer type){
        List<Category> list = (List<Category>) redisTemplate.opsForValue().get("category");
        if (list == null || list.size() == 0){
            LambdaQueryWrapper<Category> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(type!=null,Category::getType,type);
            list = categoryService.list(queryWrapper);
            redisTemplate.opsForList().rightPushAll("category",list);
        }
        return R.success(list);
    }
}
